CVE-2026-86377
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
Dell PowerProtect Data Domain contains an Out-of-bounds Write vulnerability. A low-privileged attacker with remote access could exploit it to cause a denial of service.
Risk Assessment
This could lead to unavailability of the backup system, disrupting business continuity.
Recommendation
Install the patch and monitor access to the appliance for unusual activity.
Other vulnerabilities in Dell PowerProtect Data Domain
See all- CVE-2026-90730Medium
Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.7, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Access Control vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service.
- CVE-2026-103780Critical
Dell PowerProtect Data Domain contains a Stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could exploit it to achieve command execution.
- CVE-2026-86384Critical
Dell PowerProtect Data Domain contains a Use of Hard-coded Cryptographic Key vulnerability. An unauthenticated attacker with remote access could exploit this vulnerability, leading to credential exposure.
- CVE-2026-86400Critical
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to execute arbitrary commands with root privileges, allowing complete system takeover.
- CVE-2026-86397Critical
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to create a privileged account, leading to complete system takeover.
- CVE-2026-53483Critical
An improper authentication vulnerability has been discovered in Dell PowerProtect Data Domain. An unauthenticated attacker with remote access could exploit this flaw to gain unauthorized access. This is a critical severity vulnerability as it allows complete system takeover.
- CVE-2026-53481Critical
A path traversal vulnerability has been discovered in Dell PowerProtect Data Domain. An unauthenticated attacker with remote access could exploit this flaw to gain unauthorized access to the system. This is a critical severity vulnerability as it allows complete system compromise.
- CVE-2026-86378High
Dell PowerProtect Data Domain contains a Stack-based Buffer Overflow vulnerability. A low-privileged attacker with remote access could exploit it to gain unauthorized access.
- CVE-2026-110541High
Dell PowerProtect Data Domain contains an OS Command Injection vulnerability due to improper neutralization of special elements used in OS commands. A high privileged attacker with remote access could exploit it to execute commands.
- CVE-2026-103779High
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. A low privileged attacker with remote access could exploit it to bypass protection mechanisms.
Original NVD description (English source)
Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Out-of-bounds Write vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Denial of service.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

